It's not often that we just link to a single article, but sometimes that article is simply "worth it". In this instance I recently read a posting by Loup Vaillant which made me think "This needs to be distributed to the yakking community" and so here we go…
Loup wrote about what needs to happen when you think you're finished writing your free/open source project's code, and I think you should run over there right now and read it: After your project is done — Loup Vaillant
If you're still here afterwards, well done. Now go and look over any projects of your own which you consider "finished" and see if there's anything Loup hilighted which still needs to be done to them. Maybe make a next-action to do something about it.